Lock



HHHHHHHHHH v L o C K l V AAAAAAAAAAAAAAAAA PR. 9, 1919. l 1,390,403s PatentedSept. 13, 1921. 2 EEEEEEEEEEEE r.

H. G. VOIGHT.

LOCK.

APPLICATIONy FILED APR. 9, 1919.

1,399,403, I PatentdSept. 13, 1921 UNITED STATES PATENT OFFICE.

HENRY G. VOIGHT, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO-SABGENT COH- PANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK.

To all whom it may concern.'

Be it known that I, HENRY G. Vorolrr, a citizen of the United States, residing'in New Haven, county of New Haven, andgState of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

This invention relates to locks, and it has particular reference to a pin tumbler lock provided with a sliding /bolt operatively mounted upon the same. Y'.

One object of my invention is to provide novel key-controlled means for locking the knob-operated mechanism upon sheetl metal locker doors and the like so that theknob cannot be rotated to unlock the door without the use of the proper key.

Another object of my invention is to provide an extremely simple and satisfactory means for operatively mounting a sliding bolt directly upon a pin tumbler lock casing and thereby avoid the necessity of providing a separate casing in which the sliding bolt is operatively mounted. y

Another object of my invention is to provide simple but satisfactory means for operatively mounting a spring-operated latch bolt upon a pin tumbler lock casing.

Another object is to provide a pin tumbler lock casing having a sliding bolt operatively mounted thereupon, with means for operating said bolt by said lock, which means is constructed to permit the key to be removed from its key plug when the sliding bolt is in either its locked or its unlocked position.

Still another object of my invention is to provide a sheet metal box or the like with pin tumbler lock constructed to operatively secure a sliding bolt to the inner face of said box, and to operate said bolt by said lock.

To these and other ends, the invention consists in the novel features and combinations of parts to bel hereinafter described and claimed.

ln the accompanying drawings,

Figure 1 is a fragmentary front view of a sheet metal door, showing my locking mechanism in dotted lines upon the inner face of the door, the parts being shown in their locked position;

Fig. 2 is a view of the inner face of the door shown in Fig. l;

Fig. 3 is a view similar to Fig. 2, but showing the parts in their unlocked position;

` commonl Specification of Letters Patent. Patented Sept. 13, 1921. Application lfiled April 9, 1919. Serial No. 288,667.

Fig. 4 is an enlar ed sectional view, taken on the line 4 4 of ig. 1,; i

Fig. 5 is a front view of my pin tumbler lock, with its sliding bolt applied thereto, the parts being removed from the door;

Fi 6 is a view Similar to Fig. 5, but showing t e sliding bolt held in its retracted position by a key, the normal locked position of the4 key plug being indicated in dotted lines;

Fig. 7 is a view similar to Fig. 5, showing a modification of my invention; Fig. 8 is a transverse sectional view through a door and a portion of a sheet metal box, showing a modification of rmy invention applied thereto; and

Fig. 9 is a fragmentaryfront view of the sheet metal box .and locking ivmechanism shown in Fig. 8.

In Figs. 1, 2 and 3 of the drawings, I have shown my novel locking means as applied to a sheet metal door 10, such as is provided for sheet metal lockers and the llke, the door being provided with a y `secured thereto, and operated thereby, to retain the locker door in its closed position. ln the embodiment illustrated, l have shown a pair of sliding bolts 14 having their inner ends pivotally secured to the member 13 by pivot pins 15. The free ends of these bolts are preferably moved into and out of locking engagement with the door frame when the knob 13 is operated.

ln order .tol revent an unauthorized person from rotating the knob 1'1 to unlock the door after the same has been securedv in its closed position, lprovide the locking mechanism designated in its entirety by the numeral 16, which is mounted upon the inner face of the sheet metal door 10 adjacent the knob-operated member. This locking member consists of a pin tumbler-lock casing or cylinder 17 having a flatv front face with ears 18 projectinglaterally from the opposite sides thereof, and drill holes 19 formed through these ears, the construction being such that the casing 17 is adapted to be secured against the inner face of the door 10 by rivets or the like 20 passing through the door and through the drill holes in the ears just mentioned. The casing 17 is provided with the well-known pin tumblers 21, which coperate with the key plug 22 in the usual manner. r1`he key plug is preferably p-revented from moving longitudinally 1n one direction by a resilient ring 23, which is seated in a circumferential groove adjacent the rear end of the key plug, and the usual shoulder 24, formed upon the forward end of the` key plu prevents the same from movin longitu 'nally in a rearward direction. h order that a key may conveniently be inserted in' the key plug to operate the same, the forward end of this key plug preferably projects through an opening formed in the door 10, as shown in Fig. 4.- ln o-rder to provide my pin tumbler lock with a sliding bolt which is mounted upon the same and is operated by the key plug, 1 form a relatively wide groove or slot across the front being tace of the pin tumbler lock casing, in which l groove is slidably mounted the relatively dat bolt'25, the bolt "having a large opening formed therethrough in order to form a clearance space for the key plug,.which pro` jects through this bolt, as will be apparent from the drawings. rThe sliding bolt 25 preferably has a turned-up lip 26 formed upon its forward end, as will be apparent from Figs. 2 and 3, and between this lip and one side of the lock casing 17 is preferably mounted a coiled Spring 27, whichxmay be retained in place by, short pins 28 projecting outwardlyfrom the edge of the lock casing and from one face of the lip. The spring tends to protract the sliding bolt and to retain the same in its protracted position. The means which 1 have provided for operatively connecting the key plug 22 to the sliding bolt will now be described, yreference had particularly to Figs. y5 and 6. 'll-he bolt 25 has an opening formed therethrough, as shown more particularly in Fig. 6, the portion of this o ening adjacent .the rear end of the sliding olt being cutaway in asemi-circle, as indicated by 29, to clear the key plug when the bolt is moved to its protracted position, as shown in Fig. 5, the extent to which vthe bolt may be protracted bein limited by the edge of the cut-away pplrtlon 29 abutting against the key, plug. e interior of the sliding bolt is further cut-away to form the opposite sloping shoulders 30, which are positioned to be engaged by a short pin 31 projecting outward in a radialdirection from the key plug in which it is rigidly mounted, the arrangement being such that when the key plug is rotated by its ke 32, the pin 31 abuts against one of shoul ers 30 of the sliding bolt and retracts the same. rlhe clearance space formed within the bolt 25 is relatively large in order that when this bolt is held in its retracted position, as shown in Fig. 3, the key plug iseofeoa may be rotated from the. position shown in full lines of Fig. 6 to the position indicated in dotted lines, in order that the key may be removed from the key plug.

The operation of the pin tumbler lock, shown in Figs. 1-6, inclusive, will vnow be described as-used to prevent the door knob 11 and mechanism operated thereby from being rotated from its locked to its unlocked position. I

rThe knob operating member 13 is preferably provided with a shoulder or notch 33, and the pin tumbler lock casing is secured upon the inner face of the door so that the sliding bolt, when protracted by its spring 27, will engage this shoulder 33, as shown in Figs. land 2, the shoulder 33 preferably abutting against a. lateral edgey of the bolt and upturned lip'26 to thereby prevent the door knob from being rotated in a direction to retract the sliding bolts 14. When it is desired to open the door 10, a key is inserted in the key plug, and the same is turned to retract the sliding bolt suliciently to permit the door knob to be rotated, as shown in Fig. 3. rll`his having been done, the sliding bolt will be retained in its retracted position by the engagement between the outer end of the same and the curved face of the member 13, as will be apparent from Fig. 3. rll`he key plug may then be rotated back to its normal position and the key removed from the same, so that when it is desired to again lock the door 10, all that is necessary is to close the door and rotate the door knob to its locked position, whereupon the bolt will snap into abutting engagement with the shoulder 33 in an obvious manner.

1t is sometimes desirable to so construct the locking means for a locker door or the like that the key `cannot be removed from its lock? after the door. has been closed until the parts have been moved to their locked position. 1 have therefore shown in Fig. 7 a slight modification, of my invention in which the coiled spring 27 has been omitted and relatively narrow notches 34 areformed in the opposite sides of the sliding bolt 25, one of which receives the operating pin 31, the arrangement being such .that the key plug cannot be rotated from its unlocked to its locked position without operating the sliding bolt. It will therefore be impossible to remove the key from its key plug except when the bolt 25 is protracted. The object in providing the sliding bolts 25 and 25 with symmetrically cut-away parts on opposite sides of the longitudinal axis of these bolts is to make the bolts interchangeable so that they, may be used either as a right or left hand bolt; for example, if it should be desired to have the bolt shown in Fig. 5 protracted toward all that is necessary is to turn the bolt end for end so thatits forward end will point in the opposite direction. The however, would have to be changed so that it would incline slightly to the left instead of slightly to the right, as shown.

In Figs. 8 and 9 of thedrawing, I have shown an application of my invention in Which the sliding bolt retains the door on which it is mounted in its locked 'position by directly engaging the door frame in` stead of preventing the rotation of a boltoperated knob, as in Figs. 1, 2 and 3. In Figs. 8 and 9, the bolt of the key-controlled lock mechanism is operated the same as in Fig. 7. In these two figures, I have shown my pin tumbler lock casing `17 secured to the inner face of a sheet metal door 10 adjacent the forward ed e of the same, in order that when the sllding bolt 25" is protracted it may be moved into locking engagement with the inner face of the sheet metal box 35, upon which the door l0 is mounted. The bolt 25 has its outer end offset suiiciently to permit the same to bel moved linto locking engagement with the inner face of the box, as shown. Since the bolt 25 must remain in its retracted positionwhile the dpor 10 is being moved to its closed position, it is not desirable to provide a spring, such as shown in Figs. 2 and 3, to protract this bolt, the bolt being both protracted and retracted by the key plug similarly to the operation of the bolt in Fig. 7.

In the several modifications illustrated in the drawings, the notch formed in the pin tumbler casing, in which the bolt is slidably mounted should notl be materially deeper than the width of the bolt, in order that the outer face of the bolt will engage f the inner face of the door against which the lock is mounted, so that the bolt will in this manner be retained in the notch in which it operates.

It will be apparent that the locking means herein disclosed, having a bolt slidably mounted upon one face of a pin tumbler lock casing and operated bythe key plug therein, may be used for various purposes other than herein disclosed, and I therefore desire to have it understood that I do not regard my invention as limited in its application to the uses herein pointed out.

What I claim is l. In combination with a sheet metal door, a pin tumbler* lock casing having an end thereof secured against the inner face of said door, said casing having a notch formed in the door engaging face thereof, a bolt' slidably mounted within said' notch and retained therein by the inner face of said door, and a key plug rotatable within said casing and having its forward end accessible through an opening in said door, said plug pin 31,

provided with means adjacent its forward end for imparting a sliding movement to said bolt.

2. In combination with a sheet metal door, a cylinder lock casing having its forward end secured against the inner face `of said door, said caslng and door having a bolt slidably mounted therebetween, said bolt having a clearance opening formed therethrough, a key plug rotatable within said casing and having its forward end extending through said opening, and means upon sa1d plug for imparting a sliding movement to Said bolt.

3. In combination with a sheet metal plate, a cylinder lock casing having its forward end secured 'against a face of said plate, said casing having a notch formed in the plate engaging face thereof, a bolt having a clearance opening therein slidably mounted within said notch, and a key plug rotatable within said casing and having its forward end projecting through said opening, said plug rovided with means adjacent its forward) end for imparting a sl1ding movement to said bolt.

4. In combination with a door or the like, a pin tumbler lock casing having its forward end secured against the inner face of said door, a bolt slidably mounted upon the forward face of said casing, a key plug rotatable within said casing, said plug having its forward end extending through said bolt into said door, spring means for normally holding said bolt in its protracted position and means for operatively connecting said plug to said bolt. l

5. In a lock for metal doors and the like, a pin tumbler lock casing, said easing having a bolt receiving notch formed across its forward end, a bolt having a clearance opening therein'slidably mounted within said notch, a key plug rotatable within said casing and having its forward end extending through said opening, land means u on the lo'ward end of sai plug for operating said 6. In a lock for metal doors and the like, a pin'tumbler lock casing, said casing having a bolt receiving notch formed across its forward end, a bolt having a clearance opening therein slidably mounted within said4 notch,'a key plug rotatable within said casing and having its forward end extending through said o ening, spring means for projecting said bo t,`and a laterally projecting pin u on said plug for retractin said'bolt.

n combinatlon with a s eet metal locker door or the like, a rotatable knob, bolt actuating means mounted upon 'the inner face of said door and operable by said knob, said actuating means provided with a shoulder, and key controlled locking means for said actuating means, comprising a cylinder lock casing secured to the inner -tace of said door, a bolt slidably sup- 'and a key plu ported upon theinne'r face of said door by said casing, said bolt positioned to be moved into locking engagement with said shoulder,

within said casing operatively connecte to said bolt.

' A lock for metal doors and the like, comprising a cylinder lock casing having a bolt receiving notch formed entirely across its forwardA face, a bolt slidably mounted Within saidnotch, a ke plug for operating said bolt mounted wit in said casing and constructed to extend through said', bolt, said bolt constructed to have its front end. project from either side of said casing.

9. A lock for metal doors and the like, comprising a cylinder lock casing having a bolt receiving notch formed entirely across Lenses its forward face a bolt slidably mounted within said'notch, akey plug within said casing and operatively. connected to said bolt, and spring operating means for said bolt mounted between a lateral outer wall l(Sflaid casing and the adjacent end of said 10. A lock for metal doors and the like, comprising a cylinder lock casing having a bolt receiving notch formed entirely across an end face thereof, a bolt slidably mounted within said notch, said bolt reversible end for end within Said notch, and a key plug within said casing for operating said bolt.

ln witness whereof,l l have hereunto set my hand on the 4th day of April, 1919.

HENRY G. VOIGH'D, 

